An independent-measures research study uses two samples, each with n = 12 participants.If the data produce a t statistic of t = 2.50, then which of the following is the correct decision for a two-tailed hypothesis test?
A)Reject the null hypothesis with α = .05 but fail to reject with α = .01.
B)Reject the null hypothesis with either α = .05 or α = .01.
C)Fail to reject the null hypothesis with either α = .05 or α = .01.
D)Cannot answer without additional information

Question

Quizplus · Accepted Answer

With 22 degrees of freedom (n1 + n2 - 2 = 24 - 2 = 22), the critical t-value for α = .05 is approximately 2.074 and for α = .01 is approximately 2.819. Since 2.50 is greater than 2.074 but less than 2.819, we reject the null hypothesis at α = .05 but fail to reject at α = .01.

An Independent-Measures Research Study Uses Two Samples, Each with N